# FUEL DENSITY vs TC

The clearest difference is update cadence: FUEL DENSITY at every 5 days against TC's every 3 months. TC's advantage is price ($1.99 vs $2.99) and iOS requirement (13.0 vs 15.2). On ads, in-app purchases and device support there is nothing between them.

FUEL DENSITY costs $2.99 and TC $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FUEL DENSITY ships an update every 5 days, TC every 3 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | FUEL DENSITY | TC |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 months |
| Monetization | — | Paid |
| Size | 2 MB | 12 MB |
| Requires iOS | 15.2 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Oleksii Nezhalskyi](https://appshunter.io/developer/1687730603) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### FUEL DENSITY

[App page](https://appshunter.io/ios/app/fuel-density/id6450055630)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### TC

[App page](https://appshunter.io/ios/app/tc-rtd-reference/id6504454500)

This utility app provides quick and accurate conversions between resistance, potential, and temperature for various thermocouples and RTDs. It supports offline use, temperature recording with export, and offers an intuitive interface for field technicians and engineers.

**Highlights:** Thermocouple and RTD conversion, Supports multiple sensor types, Offline functionality, Temperature recording and charting, Export data to Excel, Intuitive user interface

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is FUEL DENSITY free?

FUEL DENSITY costs $2.99, with no in-app purchases.

### Is TC free?

TC costs $1.99, with no in-app purchases.

### Do FUEL DENSITY or TC have ads?

Neither FUEL DENSITY nor TC shows ads.

### Which is updated more often, FUEL DENSITY or TC?

FUEL DENSITY ships an update every 5 days, and TC every 3 months. Most recently, FUEL DENSITY was updated on October 8, 2026 and TC on October 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*